Face mask



FIG. 1 is a front view of a face mask showing a first embodiment of my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a front view of a face mask showing a second embodiment of my new design;

FIG. 8 is a front view of a face mask showing a third embodiment of my new design; and,

FIG. 9 is a front view of a face mask showing a fourth embodiment of my new design.

The broken lines in the drawings depict portions of the face mask that form no part of the claimed design. 

CLAIM The ornamental design for a face mask, as shown and described. 